we're looking at 19 degrees up in napa. 23 in santa rosa, and these are conservative. you're going to find temperatures into the teens. coming up, we'll talk more about this freeze warning. the coldest cities tomorrow, and as this system moves out, a wet system moves in, and there's a chance for snow on bay area peaks. >>> now to ktvu's ken wayne. he's been outside tonight. talking to folks who are out there trying to stay warm. >> reporter: we're all trying to stay warm out here, frank. we pulled up here a couple of hours ago. the sign said 33 degrees. bill just mentioned 27, but it just dropped within the last few seconds to 26 degrees here in downtown walnut creek. before the night's over, it's going to be a lot colder. winter and ice skating go together. but it doesn't usually feel like it there should be real ice on the ground in walnut creek. >> i can't believe this is tonight, of all nights. it was really nice until just last night. >> reporter: a private party from a jewish synagog took to the ice. many of the participants, russian immigrants who know something